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Rozhen Night Plan

Up to ten targets, one night: each gets its good/marginal/poor windows (darkness × altitude × Moon × clouds, as on the single-target page), then the night is handed out five minutes at a time to whichever target is best — with hysteresis, so you get a few solid blocks of at least 30 minutes, not a flicker. Targets that never win a block are listed with the reason.

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Night of Saturday, 27 December 2042 · astronomical night 18:37 → 06:06 (11.49 h) · Moon 98% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–17:35: quality 0.2M31 17:35–18:05: quality 0.1M31 18:05–18:40: quality 0.4M31 18:40–18:50: quality 0.8M31 18:50–21:35: quality 0.7M31 21:35–23:00: quality 0.6M31 23:00–00:25: quality 0.5M31 00:25–00:50: quality 0.4M31 00:50–01:20: quality 0.3M31 01:20–01:25: quality 0.2observe M31 20:55–22:20M42M42 19:45–20:00: quality 0.2M42 20:00–20:40: quality 0.3M42 20:40–22:15: quality 0.4M42 22:15–02:25: quality 0.3M42 02:25–03:15: quality 0.2M42 03:15–03:25: quality 0.1observe M42 23:45–00:10M45M45 17:30–18:05: quality 0.1M45 18:05–18:40: quality 0.3M45 18:40–20:15: quality 0.6M45 20:15–22:25: quality 0.5M45 22:25–01:00: quality 0.4M45 01:00–02:50: quality 0.3M45 02:50–03:25: quality 0.2observe M45 00:10–02:30NGC 7000NGC 7000 17:30–17:35: quality 0.2NGC 7000 17:35–18:05: quality 0.1NGC 7000 18:05–18:40: quality 0.4NGC 7000 18:40–19:20: quality 0.8NGC 7000 19:20–20:45: quality 0.7NGC 7000 20:45–21:05: quality 0.6NGC 7000 21:05–21:25: quality 0.5NGC 7000 21:25–21:45: quality 0.4NGC 7000 21:45–21:50: quality 0.3observe NGC 7000 19:30–20:55V1057 CygV1057 Cyg 17:30–17:35: quality 0.2V1057 Cyg 17:35–18:05: quality 0.1V1057 Cyg 18:05–18:40: quality 0.4V1057 Cyg 18:40–19:20: quality 0.8V1057 Cyg 19:20–20:45: quality 0.7V1057 Cyg 20:45–21:05: quality 0.6V1057 Cyg 21:05–21:25: quality 0.5V1057 Cyg 21:25–21:45: quality 0.4V1057 Cyg 21:45–21:50: quality 0.3observe V1057 Cyg 18:05–19:30M33M33 17:30–17:35: quality 0.2M33 17:35–18:05: quality 0.1M33 18:05–18:40: quality 0.4M33 18:40–21:00: quality 0.7M33 21:00–22:55: quality 0.6M33 22:55–00:35: quality 0.5M33 00:35–01:00: quality 0.4M33 01:00–01:25: quality 0.3M33 01:25–01:35: quality 0.2observe M33 22:20–23:45scheduleV1057 CygNGC 7000M31M33M4518:0020:0022:0000:0002:0004:0006:00

Each row is the target's quality through the night, white → amber → green for 0 → 0.3 → 0.6 → 1 (the same thresholds as poor / marginal / good). Dark blue: the schedule. Grey columns: twilight.  Download: schedule CSV · targets CSV · JSON

Schedule

localtargethoursmean quality
16:55–18:05 — nothing worth pointing at — 1.17
18:05–19:30 V1057 Cyg 1.42 0.62
19:30–20:55 NGC 7000 1.42 0.68
20:55–22:20 M31 1.42 0.64
22:20–23:45 M33 1.42 0.54
23:45–00:10 M42 0.42 0.31
00:10–02:30 M45 2.33 0.34
02:30–07:50 — nothing worth pointing at — 5.33

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 75 unknown 18:40–22:15 (good) 89.7° at 18:40 82.4° 1.42
M42 Great Orion Nebula 22 unknown 20:15–00:10 (marginal) 42.9° at 23:30 43.7° 0.42
M45 Seven Sisters 57 unknown 18:40–02:30 (marginal) 72.6° at 21:45 52.1° 2.33
NGC 7000 North America Nebula 47 unknown 18:40–20:55 (good) 87.2° at 14:55 106.8° 1.42
V1057 Cyg 47 unknown 18:40–20:55 (good) 87.2° at 14:55 106.9° 1.42
M33 Triangulum Pinwheel 74 unknown 18:40–22:10 (good) 79.2° at 19:30 77.8° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2042-12-27"

targets: names or RA Dec, separated by commas, semicolons or newlines, at most ten. The response carries targets[] (score, verdict, best_window, windows, transit, moon_separation), schedule[] (blocks with target, start/end in UTC and local, hours, mean_quality; target: null is idle time), unscheduled[] with a why, forecast_source, warnings[]. Missing targets → 400 {"error", "code": "targets_missing"}; an unreadable date → 400 {"error", "code": "invalid_date"}.